[O.B.Left]

I get wiggles and jiggles at top too sometimes. It can be the result of force being applied to a mis aligned shaft for me. Slightly laid off loading begetting the opposite firing and I look like Zoro up there sometimes.

Top is resultant Id say. The good golfer swinging without a club in an elevator or where ever would not display a full backswing if he were being true to the forces ( pivot and arms) that he normally employs. He'd take it back to somewhere past where his right arm is parallel to the ground, not to Top. No where near it. With the weight of the club in his hands that motion alone is enough to throw the club and the attached Hands and Arms to the more normal Top position. There has to be some gliding to a stop up there. If you lift your arms all the way up there to Top or even worse End then your transition will suffer. You cant be going one way with your lower body and lifting your arms in the other direction very easily. Lifting to Top with the hands is normally accompanied with a pulling down by the hands. Full sweep release, not good for power, maybe around the green if you want to flop it or something.

But with the arms coasting to Top if you load your left foot ............you can go two ways at once. Hogan swore to Knudsen that his club never, ever got to parallel on his backswing. Something that befuddled George. He knew his club got to parallel. I think it was a play on words, a riddle, that he actually got to parallel on his "downswing". Not a bad notion given all that it implies. Another one of Hogans secrets maybe.

I personally find a lagging takeaway to really help with this deal. When I carry back , I tend to keep carrying it back and up too high. But I used to lift my hands way way too much as a kid. So I use a lagging takeaway most days, hitting or swinging. But I drag load when Im hitting too so Im all over the place.

I really like your string line as the edge of the plane idea. It is the inclined plane or a horizontal section of it. Perfect for Tracing. The opposite of a rail that you'd run the clubhead along, covering, which would see the shaft leave the string line if you had both set up. OK for putting if your eye prefers it but death to fuller strokes.